﻿<!DOCTYPE html>
<html>
<head>
  <title>Snap Link Reshaping</title>
  <!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
  <meta name="description" content="TypeScript: When reshaping an orthogonal link, make sure the points are moved onto a grid." />
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="../samples/assets/require.js"></script>
  <script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script id="code">
    function init() {
      require(["SnapLinkReshapingScript"], function(app) {
        app.init();
        document.getElementById("SaveButton").onclick = app.save;
        document.getElementById("LoadButton").onclick = app.load;
        document.getElementById("AvoidsNodesCheckBox").onclick = app.toggleAvoidsNodes;
      });
    }
  </script>
</head>
<body onload="init()">
  <div id="sample">
    <div style="width: 100%; display: flex; justify-content: space-between">
      <div id="myPaletteDiv" style="width: 105px; height: 620px; margin-right: 2px; background-color: whitesmoke; border: solid 1px black"></div>
      <div id="myDiagramDiv" style="flex-grow: 1; height: 620px; border: solid 1px black"></div>
    </div>
    <label><input type="checkbox" id="AvoidsNodesCheckBox" checked="checked"/>avoidsNodes</label>
    <p>
      This sample is a simplified version of the <a href="../samples/draggableLink.html">Draggable Link</a> sample.
      Links are not draggable, there are no custom <a>Adornment</a>s, nodes are not rotatable, and links
      do not have text labels.
    </p>
    <p>
      Its purpose is to demonstrate the <a href="SnapLinkReshapingTool.ts">SnapLinkReshapingTool</a>,
      an extension of <a>LinkReshapingTool</a> that snaps each dragged reshape handle of selected Links to
      the nearest grid point.  If the <a>SnapLinkReshapingTool.avoidsNodes</a> option is true,
      as it is by default, then the reshaping is limited to points where the adjacent segments would not
      be crossing over any avoidable nodes.
    </p>
    <p>
      Note how the "LinkReshaped" DiagramEvent listener changes the <a>Link.routing</a> of the reshaped Link,
      so that it is no longer AvoidsNodes routing but simple Orthogonal routing.
      This combined with <a>Link.adjusting</a> being End permits the middle points of the link route to be
      retained even after the user moves or resizes nodes.
      Furthermore there is a TwoWay <a>Binding</a> on <a>Link.routing</a>, so that the model remembers
      whether the link route had ever been reshaped manually.
    </p>
    <button id="SaveButton">Save</button>
    <button id="LoadButton">Load</button>
    <textarea id="mySavedModel" style="width:100%;height:300px">
  { "class": "go.GraphLinksModel",
    "linkFromPortIdProperty": "fromPort",
    "linkToPortIdProperty": "toPort",
    "modelData": {"position":"0 0"},
    "nodeDataArray": [
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-3, "loc":"184 176"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-2, "loc":"248 248"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-4, "loc":"424 192"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-5, "loc":"320 152"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-6, "loc":"424 320"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-7, "loc":"352 256"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-8, "loc":"176 296"},
  {"text":"DB", "figure":"Database", "fill":"lightgray", "key":-9, "loc":"288 344"},
  {"text":"Step", "key":-10, "loc":"96 240"},
  {"text":"Step", "key":-11, "loc":"536 280"}
  ],
    "linkDataArray": [
  {"from":-10, "to":-11, "fromPort":"R", "toPort":"L", "points":[121,240,131,240,132,240,132,240,216,240,216,176,264,176,264,104,392,104,392,240,480,240,480,280,501,280,511,280], "routing":"Orthogonal"}
    ]}
    </textarea>
  </div>
</body>
</html>